Akademik Veri Yönetim Sistemi
Turk Hijyen ve Deneysel Biyoloji Dergisi, cilt.77, sa.3, ss.343-348, 2020 (Scopus)
Objective: Trematodes are a class of flatworms with parasites that are important for both human and animal health. When the studies on trematodes in our country are examined, it is seen that there are very few studies on the molluscs wich intermediate host of trematodes and larval shapes. In our study, it was aimed to determine the types of gastropod samples collected from the stream where the molluscs of medical importance can be found, and to investigate the trematode larval shapes located in these species and to determine the risk level of the region. Methods: The study was carried out between April and June 2019, approximately 5 km north of Sivas province, around a river which is fed with natural spring waters and whose depth is measured as maximum 50 cm, with abundant trees, rich in vegetation. Mollusca samples were collected twice a week by visiting the study area. Collected samples were taken into bottles with clean water and brought to laboratory and examined under microscope and keys were used to identify mollusca species. Species were determined by considering the crust structure and anatomical features. Then, the molluscs were crushed and the examination of the larval stages inside them was performed under a light microscope. Mineral analysis of the river was analyzed by considering the basic needs of molluscs in Advanced Technology Research and Application Center. Results: In the study, three different snail species, 165 Lymnaea truncatula, 1650 Planorbis intermixtus and 657 Oxyloma elegans, were detected. Among the dissected species, larval trematodes were found in 16 (10%) of 165 Lymnaea truncatula and 332 (20%) of 1650 Planorbis intermixtus. It was determined in the water analysis that the amount of dissolved oxygen and calcium amount were above the standards. Conclusion: Freshwater snails, as the intermediate hosts of trematodes, can cause health hazards in animals and humans. Determining the prevalence of these snails is important for determining the risk map of trematode diseases of our geography. It has been concluded that determining the species and investigating the prevalence of these molluscs is important for determining the risk map of trematode diseases.